package com.felix.forum.web.admin;

import com.felix.forum.po.Tag;
import com.felix.forum.service.TagService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;

/**
 * @author Administrator
 * @date 2022/02/17 12:32
 **/
@Controller
@RequestMapping("/admin")
public class TagController {

    @Autowired
    private TagService tagService;

    @GetMapping("/tagManage")
    public String tagManage(@PageableDefault(size = 8,sort = {"id"},direction = Sort.Direction.DESC)
                                         Pageable pageable, Model model){
        model.addAttribute("page", tagService.listTag(pageable));
        return "admin/tagManage";
    }

    @GetMapping("/tagManage/input")
    public String input(Model model){
        model.addAttribute("tag", new Tag());
        return "admin/tagInput";
    }

    @GetMapping("/tagManage/{id}/input")
    public String editInput(@PathVariable Long id, Model model) {
        model.addAttribute("tag", tagService.getTag(id));
        return "admin/tagInput";
    }

    @PostMapping("/tagManage")
    public String post(@Valid Tag tag, BindingResult result, RedirectAttributes attributes){
        Tag tag1 = tagService.getTagByName(tag.getName());
        if (tag1 != null) {
            result.rejectValue("name", "nameError","该标签已存在，不能重复添加！");
        }
        if (result.hasErrors()){
            return "admin/tagInput";
        }
        Tag tag2 = tagService.saveTag(tag);
        if (tag2 == null) {
            attributes.addFlashAttribute("message", "新增失败！");
        }else {
            attributes.addFlashAttribute("message", "新增成功！");
        }
        return "redirect:/admin/tagManage";
    }

    @PostMapping("/tagManage/{id}")
    public String editPost(@Valid Tag tag, BindingResult result, @PathVariable Long id, RedirectAttributes attributes){
        Tag tag1 = tagService.getTagByName(tag.getName());
        if (tag1 != null) {
            result.rejectValue("name", "nameError","该标签已存在，不能重复添加！");
        }
        if (result.hasErrors()){
            return "admin/tagInput";
        }
        Tag tag2 = tagService.updateTag(id,tag);
        if (tag2 == null) {
            attributes.addFlashAttribute("message", "更新失败！");
        }else {
            attributes.addFlashAttribute("message", "更新成功！");
        }
        return "redirect:/admin/tagManage";
    }

    @GetMapping("/tagManage/{id}/delete")
    public String delete(@PathVariable Long id, RedirectAttributes attributes) {
        tagService.deleteTag(id);
        attributes.addFlashAttribute("message", "删除成功！");
        return "redirect:/admin/tagManage";
    }

}
